JP6368849B2 - 磁場調整支援システムおよび磁場調整方法 - Google Patents

磁場調整支援システムおよび磁場調整方法 Download PDF

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JP6368849B2
JP6368849B2 JP2017500759A JP2017500759A JP6368849B2 JP 6368849 B2 JP6368849 B2 JP 6368849B2 JP 2017500759 A JP2017500759 A JP 2017500759A JP 2017500759 A JP2017500759 A JP 2017500759A JP 6368849 B2 JP6368849 B2 JP 6368849B2
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magnetic field
eigenmode
distribution
measurement
magnetic
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JPWO2016133204A1 (ja
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充志 阿部
充志 阿部
榊原　健二
健二 榊原
拓也 藤川
拓也 藤川
光 花田
光 花田
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Hitachi Ltd
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Hitachi Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/387—Compensation of inhomogeneities
    • G01R33/3875—Compensation of inhomogeneities using correction coil assemblies, e.g. active shimming
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
    • A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves  involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/24—Arrangements or instruments for measuring magnetic variables involving magnetic resonance for measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/243—Spatial mapping of the polarizing magnetic field
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
    • G01R33/387—Compensation of inhomogeneities
    • G01R33/3873—Compensation of inhomogeneities using ferromagnetic bodies ; Passive shimming

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Radiology & Medical Imaging (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
JP2017500759A 2015-02-20 2016-02-19 磁場調整支援システムおよび磁場調整方法 Active JP6368849B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2015031254 2015-02-20
JP2015031254 2015-02-20
PCT/JP2016/054879 WO2016133204A1 (ja) 2015-02-20 2016-02-19 磁場調整支援システムおよび磁場調整方法

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JPWO2016133204A1 JPWO2016133204A1 (ja) 2017-10-19
JP6368849B2 true JP6368849B2 (ja) 2018-08-01

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US (1) US10408903B2 (zh)
JP (1) JP6368849B2 (zh)
CN (1) CN107249453B (zh)
WO (1) WO2016133204A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10845441B1 (en) * 2017-10-17 2020-11-24 Nuevomr, Llc Continuously adjustable passive shims for magnets
DE102020204196B3 (de) * 2020-03-31 2021-07-15 Bruker Switzerland Ag Shim-Vorrichtung mit einer hochtemperatursupraleitenden Shim-Leiter-bahn, Magnetanordnung und Verfahren zum Laden einer HTS-Shim-Vor-richtung

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2598808B1 (fr) * 1986-05-13 1993-09-17 Thomson Cgr Procede de reglage des correcteurs d'homogeneite du champ magnetique cree par un aimant
US5418462A (en) * 1994-05-02 1995-05-23 Applied Superconetics, Inc. Method for determining shim placement on tubular magnet
DE10046182C2 (de) 2000-09-19 2002-08-01 Bruker Ag Faellanden Magnetanordnung mit einem supraleitenden Magnetspulensystem und einer magnetischen Feldform-Vorrichtung sowie Verfahren zur Dimensionierung
JP2004073660A (ja) * 2002-08-21 2004-03-11 Mitsubishi Electric Corp 磁気共鳴イメージング用電磁石の磁界補正方法
US7492158B2 (en) * 2006-04-04 2009-02-17 Esaote S.P.A. Method for determining construction parameters of magnet structures designed to generate magnetic fields in predetermined volumes of space and method for correcting magnetic fields in predetermined volumes of space, particularly in MRI apparatus
US7592812B2 (en) * 2006-04-13 2009-09-22 Kabushiki Kaisha Toshiba Magnetic resonance imaging apparatus and static magnetic field correction method
JP5060384B2 (ja) * 2008-05-09 2012-10-31 株式会社日立製作所 磁場均一度調整用ソフトウェア、磁場均一度調整方法、磁石装置及び磁気共鳴撮像装置
US8947089B2 (en) * 2008-05-09 2015-02-03 Hitachi, Ltd. Magnetic field shimming adjustment: reducing magnetic distribution errors by obtaining current potential distributions of MRI apparatus
GB2468852A (en) * 2009-03-23 2010-09-29 Siemens Magnet Technology Ltd Arrangements and Method for Shimming a Magnetic Field
JP5291583B2 (ja) * 2009-09-16 2013-09-18 株式会社日立メディコ 磁場分布測定方法、磁場分布測定用治具、磁石装置及び磁気共鳴撮像装置
JP5427565B2 (ja) * 2009-11-24 2014-02-26 株式会社日立製作所 Ｍｒｉ装置用磁場調整
WO2011066652A1 (en) * 2009-12-02 2011-06-09 Nanalysis Corp. Method and apparatus for producing homogeneous magnetic fields
US9588200B2 (en) 2011-03-25 2017-03-07 Hitachi, Ltd. Method for adjusting static magnetic field homogeneity, static magnetic field generation device for magnetic resonance imaging, magnetic field adjustment system, and program
CN102508182A (zh) * 2011-11-30 2012-06-20 苏州安科医疗系统有限公司 一种用于磁共振成像的多阶谐波动态匀场方法
JP2014004169A (ja) * 2012-06-25 2014-01-16 Hitachi Medical Corp 磁場調整方法、磁場発生装置、磁気共鳴イメージング装置及び磁場調整装置
JP6719902B2 (ja) * 2012-12-18 2020-07-08 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． 分極磁場のファントムベースのｍｒ磁場マッピング
WO2015005109A1 (ja) * 2013-07-09 2015-01-15 株式会社 日立メディコ 磁場調整支援装置、磁場調整支援方法、ｍｒｉ装置および磁石装置
CN103529411B (zh) * 2013-11-04 2016-05-04 中国科学院武汉物理与数学研究所 一种基于梯度编码的自动匀场方法
WO2016133205A1 (ja) * 2015-02-20 2016-08-25 株式会社日立製作所 磁場調整方法

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Publication number Publication date
JPWO2016133204A1 (ja) 2017-10-19
US10408903B2 (en) 2019-09-10
CN107249453A (zh) 2017-10-13
WO2016133204A1 (ja) 2016-08-25
CN107249453B (zh) 2020-12-25
US20180246180A1 (en) 2018-08-30

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